Obadiah seely



(-No Model.)

O, S EELY. SASH BALANCE.

No. 509,587. Patented Nov. 28, 1893.

#5621666 6 5 I fluenia'ni (2.440 a;

UNIT D STATES PATENT OFFIcE.

OBADIAH SEELY, OF SYRACUSE, NEW YORK, ASSIGNOR TO THE E. C. STEARNS 8:COMPANY, OF SAME PLACE.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 509,587, dated November28, 1893.

Application filed November 28, 1892- Serial No. 4631 N model.)

To all whom it may concern.-

Be it known that I, OBADIAH SEELY, acitizen of the United States,residing at Syracuse, in the county of Onondaga and State of New York,have invented new and useful Improvements in Sash-Balances, of which thefollowing is a specification.

This invention relates to that class of sash balances which contains aspring-actuated drum which is secured to the Window casing, a metallicband wound upon said drum and attached to the sash and an adjustablebrake which bears against the band and whereby the frictional resistancecan be increased or reduced.

The object of this invention is to improve and simplify the constructionof the brake and to render the same efficient and readily accessible foradjustment and repairs.

In the accompanying drawings:Figure 1 is a side elevation of my improvedsash balance. Fig. 2 is a longitudinal section thereof, the sectionbeing taken in line 2-2, Fig. 3. Fig. 3 is a front view of the casingwith the brake block removed. Fig. 4 is a front view of the brake block.

Like letters of reference refer to like parts in the several figures.

A represents the casing provided with an upright face plate a, B thespring drum mounted in the rear portion of the casing and C the metallicband which is wound upon the drum and attached with one end .to the drumand with the other to the sash. This band passes from the upper portionof the drum downwardly and forwardly through an opening in the faceplate of the casing. The lower part of this opening is bounded by aninclined friction face at which extends upwardly and rearwardly from thefront surface of the face plate and over which the band runs with itsrear surface.

E represents a brake block which is arranged in the face plate'and bearswith its lower portion against the front surface of the band oppositethefriction face of the face plate, so that the band is clamped betweenthe brake block and the friction face. The

. lower rear face of the brake block isinclined upwardly and rearwardlyso as to stand parallel with the friction face of the face plate. Theface plate is provided with a recess in which the brake block isarranged so that the front side of the brake block is flush with theface plate.

F represents a horizontal screw bolt which passes through the upperportions of the brake block and face plate and carries a screw nut f atits rear end. A springgis arranged between this not and the rear side ofthe face plate. This spring draws the bolt and the brake blockrearwardly and presses the brake block against the band and the latteragainst the friction face of the face plate. The screw bolt is providedat its front end with a slotted head into which a screw driver can beinserted for turning the bolt when it is desired to change the tensionof the spring. The screw nut is prevented from turning with the bolt bya rearwardly projecting lip '5 formed on the face plate and fittingagainst the upper side of the nut. The force with which the brake blockis pressed against the band is regulated by adjusting the screw bolt.The friction face of the face plate and the rear face of the brake blockare preferably covered with leather or similar material. The brake blockand the friction face are arranged on the front side of the face platewhere both are readily accessible. This permits the brake block to bereadily adjusted and to be removed when it is necessary to renew thefacings of the brake block and the friction face.

I claim as my invention- 1. The combination with the drum, the bandattached thereto and the supporting casing having a friction faceagainst which the unwound portion of the band runs, of a brake blockattached to the casing and bearing against the opposite side of theband, whereby the latter is pressed by the brake block against thefriction face, substantially as set forth.

2. The combination with the casing having its face plate provided withan opening, the drum, and the band passing through said opening, of abrake block arranged in the face plate and bearing with itslqwer portionWitness my hand this 23d day of Novemagainst the frent side of the band,a horizonber, 1892', tal screw bolt passing through the upper portionsof the brake block and face plate, and OBADIAH SEELY 5 an adjustablespring applied to the bolt on Witnesses: the rear side of the faceplate, substantially PERRY HASBROUOK,

as set forth. r HERBERT E. MASLIN.

